Plagiarism

4OR has a strict policy against plagiarism. All papers are screened against plagiarism using iThenticate. 4OR is a member of CrossCheck by CrossRef and iThenticate. iThenticate is a plagiarism screening service that verifies the originality of content submitted before publication. iThenticate checks submissions against millions of published research papers, and billions of web content. Authors, researchers and freelancers can also use iThenticate to screen their work before submission by visiting www.ithenticate.com.

Some cases of plagiarism are reported below.

• Papers with full details on the following cases.
  
  • A case of plagiarism: Danut Marcu., 4OR Vol 4: 1, 11-13 (2006)
  • Plagiarism again: Sreenivas and Srinivas, with an update on Marcu, 4OR Vol 7: 1, 17-20 (2009)
• A first case of plagiarism: Danut Marcu.
  
  • The plagiate (381KB)
  • The Wikipedia entry about Marcu
  • List of "publications by" Danut Marcu. (263KB)
  • Another piece from an independent source: Alexander Soifer, The Case of Dr. Danut, Marcu, Geombinatorics XVI(3), 2007, 293-296
• Another case of plagiarism: M. Sreenivas and T. Srinivas.
  In November 2007 the following new case was observed.
  
  • The plagiate (566KB)
  • Plagiate from: S. Storoy, The Transportation: More-for-less Criterion, Optimization Online, 2007
  • Another plagiate (686KB)
  • Yet another plagiate (650KB)
  In august 2009 the following letters were received, apparently disculping Dr. Srinivas
  • Letter From Dr Srinivas (453KB)
  • Letter From Mr Sreenivas (453KB)
  This and related plagiarism cases concerning these authors has been investigated by SIAM (Society for Industrial and Applied Mathematics) in october 2009, culminating in the following SIAM report on the investigation of plagiarism by Sreenivas and Srinivas that confirms our findings.
• A surprising, elaborate cheating scheme is reported in the editorial "A brand new cheating attempt: a case of usurped identity", published in the December 2016 issue of 4OR.

Banned from publication in 4OR for plagiarism:

• Danut Marcu
• M. Sreenivas
• T. Srinivas
• Ajinkya Tanksale (Indian Institute of Technology Kharagpur, India)
• Jitendra K Jha (Indian Institute of Technology Kharagpur, India)
• Alireza Noruzi (Islamic Azad University, Ardabil, Iran)
• Hasan Jafari (Islamic Azad University, Ardabil, Iran)
• Tohid Banki (Islamic Azad University, Bilesuvar, Moghan, Iran)
• Mohsen Mohammadi (Payame Noor University, Tehran, Iran)
• Jinfang LIU
  Finance and Economics School of Hunan University of Technology, Zhuzhou, China
• R. Sophia Porchelvi
  Department of Mathematics, ADM College for Women (Autonomous), Nagapattinam, Tamilnadu, India.
• K. Sathya
  Department of Mathematics, Poompuhar College (Autonomous), Melaiyur, Tamilnadu, India.
• R. Irene Hepzibah
  Department of Mathematics, AVC College of Engineering, Mayiladuthurai, Tamilnadu, India.
• Diogo Cunha Ferreira (Universidade de Lisboa)
• Rui Cunha Marques (Universidade de Lisboa)
• Maria Isabel Pedro (Universidade de Lisboa)
• Yan Li (Hebei University of Technology, Tianjin, China)
• Yangyang Wang (Hebei University of Technology, Tianjin, China)
• Youxi Wu (Hebei University of Technology, Tianjin, China)
• Zhendong Wang (Northwest University, Xi'an, Shaanxi, China)
• Tianlin Jin (Center of China Urban Economic, Peking University, Beijing)

Banned from publication in 4OR for simultaneous submission:

• Ramin Yarinezhada (Department of Mathematics and Computer Science, Amirkabir University of Technology, Tehran, Iran)
• Seyed Naser Hashemia (Department of Mathematics and Computer Science, Amirkabir University of Technology, Tehran, Iran)